Quite often when I use a 1990s system, I encounter several things that are instantaneous, while modern machines take several seconds.

Like, sending an empty folder to the bin:

Win 10 this afternoon took seconds to display a dialog box with no content, the a couple seconds to add a progressbar, then a second to add the cancel button, then multiple seconds to finish showing progress.

But at home a 1991s system with System 7 completes the same task instantly without needing a progressbar.